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Tekko 20th July 2005 12:04 PM

TDA7293 as subwoofer amp ?

These ICīs, could they be used as a subwoofer amplifier ? I found a site with a schematic and decription of three of these paralelled so i was thinking of paralelling four to make it more symmetric.

What do you think ?

drbobee 20th July 2005 01:17 PM


Good idea. The caracteristics of this IC are good for this job, but no use them 3 or more SIMPLY parralel !

So: take 4 chip combined parralel and bridgged mode.
Like this.


Tekko 20th July 2005 01:47 PM

Cannot be done. The sub has two 4 ohm drivers so either 4 of these in paralell to drive 2 ohm or 2x2 to drive 2x4 ohms, 1x400 watts or 2x200 watts.

Tekko 21st July 2005 02:09 PM

Now i have bought these ICs, 10 on ebay for Ģ3 each. i hope they arrive next week so i can begin.

Nordic 15th January 2006 07:12 PM

Got a broken Yamaha SW105 sub today, and guess what is inside... output side seems powered by a 100W transistor.

sagarverma 17th January 2006 01:33 PM

the datasheet tell about paralleling several chips.see it,it got all.

Tekko 19th January 2006 04:42 PM

Hum an old thread woken alive :eek:

If you donīt know already these ICs ended as the main amp in my stuff.

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